1931 ] Camponotus ( Myrmepomis ) sericeiventris 
93 
sericeiventris but the pubescence is more golden, as in the 
maxima, and the petiolar border is usually more or less 
distinctly subdentate in the middle. 
Female. Length about 16 mm. 
Closely resembling the female of the typical sericeiventris 
but with entirely black head and thorax, the former more 
deeply excised behind and with much smoother and more 
shining sides, the petiolar border without a median notch 
and with less produced lateral corners. Wing membranes 
distinctly more deeply infuscated. Appressed pubescence 
more golden as in the worker satrapa, and the convergence 
of the pubescence on the second and third gastric segments 
even more pronounced than in the typical sericeiventris. 
I have seen specimens of this form, which has been con- 
fused with the true sericeiventris , from nearly all the fol- 
lowing localities: 
Panama : Barro Colorado Island, type locality (Wheeler; 
N. Banks; P. Rau; W. C. Allee; P. Haskins) ; Rio Chenillo 
(Wheeler) ; David (C. Richter). 
Colombia: (Lindig) ; (Tischbein; Forel) ; Antioquia 
(Nisser; Kraemer) ; Puerto de los Pobres, Antioquia (0. 
Fuhrmann) . 
Ecuador: Santo Domingo de los Colorados and between 
San Nicolas and Guanasilla (P. Rivet). 
Peru: Santa Ana, 3,000 ft. (Yale Peruv. Exped.) ; Upper 
Pachitea (J. C. Bradley). 
Brazil: Puerto America, Rio Putumayo (J. C. Bradley). 
Costa Rica: (Tonduz) ; Port Limon (Wheeler; F. C. 
Paulmier) ; Turrucares (P. P. Calvert) ; Turrucares and 
Hamburg Farm (C. W. Dodge) ; Rio Raventazon, Santa 
Clara (P. Biolley) ; near San Jose (H. Schmidt). 
Honduras : Ceiba, Lombardia ; Carmelina, Progresso, 
Tela (W. M. Mann). 
Var. holmgreni var. nov. 
Worker major. Length 12 mm. 
Very similar to the typical sericeiventris , but the funi- 
culi, corners of the head, the gaster and legs are deep red. 
